機器
art
automatic
automotive
axis
belt
black
cars
cross
cutaway
cylinder
cylindrical
direction
drive
driver
education
efficiently
flexible
gear
how
icon
illustration
isolated
link
load
loop
looped
material
mechanical
mechanics
mechanism
motion
movement
object
parallel
power
pulley
relative
rotating
rubber
science
section
shifting
sign
simple
symbol
technology
transmission
works